<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>03-toRef</title>
    <script src="https://unpkg.com/vue@next"></script>
  </head>
  <body>
    <div id="root"></div>

    <script>
      const app = Vue.createApp({
        template: `
                    <div> {{age}} </div>
                `,

        setup(props, context) {
          const { reactive, toRefs, toRef } = Vue;
          const data = reactive({ name: "宝姐姐" });

          //const { age } = toRefs(data);
          const age = toRef(data, "age");

          setTimeout(() => {
            age.value = "云牧";
          }, 2000);

          return { age };
        },
      });

      const vm = app.mount("#root");
    </script>
  </body>
</html>
